EP 0470153 B1 19960228 - ACTIVE SOUND AND/OR VIBRATION CONTROL
Title (en)
ACTIVE SOUND AND/OR VIBRATION CONTROL
Title (de)
AKTIVE SCHALL- UND/ODER VIBRATIONSSTEUERUNG
Title (fr)
SYSTEME ACTIF DE CONTROLE DE SON ET/OU DE VIBRATIONS
Publication
Application
Priority
- GB 9000617 W 19900420
- GB 8909433 A 19890425
Abstract (en)
[origin: WO9013108A1] An active sound or vibration control system for compensating noise or vibration arising from a periodic source of changing periodicity, wherein sensors (6) sense the existing noise and vibration, the sensor signals are sampled several times per cycle by an ADC (8) triggered by a signal output from a sensor (3) detecting the position of the source in its cycle, the sampled signals are transformed into compensation actuator drive signal values by a series of transform and adaptation modules (11 to 13, 15) based on algorithms dependent on the frequency of the source, and the drive signal values are stored in a memory means (1) continually updated by the values derived from the sampled sensor signals.
IPC 1-7
IPC 8 full level
F01N 1/00 (2006.01); F16F 15/02 (2006.01); G05B 13/02 (2006.01); G05D 19/02 (2006.01); G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17821 (2017.12 - EP US); G10K 11/17825 (2017.12 - EP US); G10K 11/17883 (2017.12 - EP US); G10K 2210/121 (2013.01 - EP); G10K 2210/3024 (2013.01 - EP); G10K 2210/3025 (2013.01 - EP); G10K 2210/3032 (2013.01 - EP); G10K 2210/3042 (2013.01 - EP); G10K 2210/3046 (2013.01 - EP); G10K 2210/3051 (2013.01 - EP)
Designated contracting state (EPC)
DE ES FR IT SE
DOCDB simple family (publication)
WO 9013108 A1 19901101; AU 5545690 A 19901116; AU 635266 B2 19930318; CA 2049332 A1 19901026; CA 2049332 C 20000801; DE 69025604 D1 19960404; DE 69025604 T2 19961024; EP 0470153 A1 19920212; EP 0470153 B1 19960228; ES 2084028 T3 19960501; GB 2230920 A 19901031; GB 2230920 B 19931222; GB 8909433 D0 19890614; JP H04505221 A 19920910
DOCDB simple family (application)
GB 9000617 W 19900420; AU 5545690 A 19900420; CA 2049332 A 19900420; DE 69025604 T 19900420; EP 90907216 A 19900420; ES 90907216 T 19900420; GB 8909433 A 19890425; JP 50664990 A 19900420